Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751099AbWEVTk6 (ORCPT ); Mon, 22 May 2006 15:40:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751157AbWEVTk6 (ORCPT ); Mon, 22 May 2006 15:40:58 -0400 Received: from mail.gmx.de ([213.165.64.20]:36833 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1751099AbWEVTk5 (ORCPT ); Mon, 22 May 2006 15:40:57 -0400 X-Authenticated: #2308221 Date: Mon, 22 May 2006 21:40:40 +0200 From: Christian Trefzer To: Matthias Schniedermeyer Cc: Alan Cox , Jan Knutar , Pau Garcia i Quiles , linux-kernel@vger.kernel.org Subject: Re: [IDEA] Poor man's UPS Message-ID: <20060522194040.GC5995@hermes.uziel.local> References: <200605212131.47860.pgquiles@elpauer.org> <20060521224012.GB30855@hermes.uziel.local> <200605221604.16043.jk-lkml@sci.fi> <20060522151303.GA4538@hermes.uziel.local> <1148312458.17376.54.camel@localhost.localdomain> <20060522154830.GA5344@hermes.uziel.local> <4471E39C.1070003@citd.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="sHrvAb52M6C8blB9" Content-Disposition: inline In-Reply-To: <4471E39C.1070003@citd.de> User-Agent: Mutt/1.5.11 X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2028 Lines: 52 --sHrvAb52M6C8blB9 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 22, 2006 at 06:15:24PM +0200, Matthias Schniedermeyer wrote: > You just described the working-principle of a "line-interarctive" UPS. > AFAICT this is the most used UPS-type, at least for every "small" UPSes= =20 > i've seen in the last few years. Exactly, and since I cannot afford to buy one I'd have to build it myself using mainly car batteries. The most complex part would be to charge the batteries in a way that won't kill them over time. Building such stuff into the PSU after the secondary coil and AC/DC converter would save the double-conversion loss, therefore making this ideal for a single machine. But I'm still brainstorming, lacking both money and time. Kind regards, Chris --sHrvAb52M6C8blB9 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iQIVAwUBRHITt12m8MprmeOlAQKyEBAAsPb1aPRHdYTLDPKOu3nsSS9+Z2N/W7Ed GAcVkY0Lm63T2vl6pBRusAXrr1veYkm/UMEiZot9X5MgBW9LtAeze3nYYr+aSlrk dDtZjvluD0CccSEydhkFKiq5edydIibXe14TnVeTb3od5Ps4/5Udtcf2nMa5889d vmHDs9PrSgEmeb5fAaXgM653uceujRoYVMC1oOunw9L9prbyStHwP5YFpfXyN/mG +nJubN9MOoP3iDdaUgQsziiTLBYvw4IPLxu10/iWblWil3AUIyRwA1LUfWZa/6fP g0SaqZPZGPM90uoXz1f+R9FrgXFiQlDzsyHwzCLe5RoQTQ3uzgREiyWw+gsOXyzR p9URO+Cj4TQiG7+mMHtZHNrOU70hlLwxJ8Bv9wO01U2IeoWOt9HKGG/a0N3ALRgX y5PNFLGtx2haGeyxJIXKVXd0JuuIoeJilEjmejRjjJF0FjpYEoCu0fO7Aeedp0JS B92aWE+p1kI1lzgRgDUUe1pNbTPid/xA/PmLqMIFP4gLKSFOSFo+zYfyNT5qJu2D eIpX5lEfFhcphC4AfmztRRQtiC3/USuspAxnk0rgWoIrwYhim84HNsOQ1gfrwv53 ESxbK9Fo43jsFZwNETtuX+5t+Y6z9t6mXJ4XPwtOhvIkCCwfDWJEXapETUcsADhT 4bgSUZaPB8o= =Hal0 -----END PGP SIGNATURE----- --sHrvAb52M6C8blB9-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/